This is a Small Die Cast US Navy S-3 Viking Jet Aircraft in Haze Gray.  It is made of Metal and are highly detailed, note the markings.  It is about 3 inches long and has a wing span of about 4 inch.  I bought this as part of a job lot and is in very good condition.

I will gladly combine these small items to save on the shipping.  Each additional NMT or Micro Machine item would be just $.25 for shipping.